GB/T 26704-2022_English: PDF (GB/T26704-2022)
Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
GB/T 26704-2022 | English | 339 |
Add to Cart
|
4 days [Need to translate]
|
Pencils
| Valid |
GB/T 26704-2022
|
GB/T 26704-2011 | English | 165 |
Add to Cart
|
0--9 seconds. Auto-delivery
|
Pencils
| Obsolete |
GB/T 26704-2011
|
Standard ID | GB/T 26704-2022 (GB/T26704-2022) | Description (Translated English) | Pencils | Sector / Industry | National Standard (Recommended) | Classification of Chinese Standard | Y50 | Classification of International Standard | 97.180 | Word Count Estimation | 18,144 | Date of Issue | 2022-10-14 | Date of Implementation | 2023-05-01 | Older Standard (superseded by this standard) | GB/T 26704-2011 | Drafting Organization | China First Pencil Co., Ltd., Anshuo Stationery (Shanghai) Co., Ltd., Shanghai Pen Industry Research Institute, Shanghai Quality Supervision and Inspection Technology Research Institute, Deli Group Co., Ltd., Beifa Group Co., Ltd., National Stationery Quality Supervision and Inspection Center, Shanghai Chenguang Stationery Co., Ltd., Shangzhi Pearl Pen Industry Co., Ltd., Zhejiang Hongxing Stationery Co., Ltd., Shenzhen Qixin Group Co., Ltd., Qingdao Yingge Cultural and Educational Products Co., Ltd., Guangdong Jinwannian Stationery Co., Ltd. Company, Harbin China Standard Pencil Company, Wenzhou Tianjiao Pen Co., Ltd., Zhejiang Jiuling Brush Co., Ltd., Jinan Bee Pen Co., Ltd., Shanghai Pen Technology Service Co., Ltd., Wenzhou Hobby Pen Co., Ltd., Wenzhou Tian Feng Stationery Co., Ltd., Yiwu City | Administrative Organization | National Standardization Technical Committee for Pen Making (SAC/TC 378) | Proposing organization | China National Light Industry Council | Issuing agency(ies) | State Administration for Market Regulation, National Standardization Management Committee | Standard ID | GB/T 26704-2011 (GB/T26704-2011) | Description (Translated English) | Pencils | Sector / Industry | National Standard (Recommended) | Classification of Chinese Standard | Y50 | Classification of International Standard | 97.180 | Word Count Estimation | 14,131 | Date of Issue | 2011-06-16 | Date of Implementation | 2011-12-01 | Older Standard (superseded by this standard) | QB/T 2774-2006 | Quoted Standard | GB/T 191; GB/T 2828.1-2003; GB/T 6388; GB 21027-2007 | Drafting Organization | Industrial Research Institute, Shanghai pens | Administrative Organization | National Standardization Technical Committee pens | Regulation (derived from) | Announcement of Newly Approved National Standards No. 9 of 2011 | Proposing organization | China Light Industry Federation | Issuing agency(ies) | Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China; Standardization Administration of China | Summary | This standard specifies the classification of pencils, requirements, test methods, inspection rules and signs, packaging, transportation and storage. This standard applies to graphite pencils and colored pencils. This standard does not apply to special purpose water-soluble colored pencils and a pencil. |
GB/T 26704-2022
Pencils
ICS 97.180
CCSY50
National Standards of People's Republic of China
Replacing GB/T 26704-2011
pencil
Published on 2022-10-12
2023-05-01 Implementation
State Administration for Market Regulation
Released by the National Standardization Administration
foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents"
drafted.
This document replaces GB/T 26704-2011 "Pencil". Compared with GB/T 26704-2011, except for structural adjustments and editorial changes,
The main technical changes are as follows.
--- Changed the scope (see Chapter 1, Chapter 1 of the.2011 edition);
--- Deleted the classification of colored pencils by grade (see Chapter 3 of the.2011 edition);
---Added the requirements for the force on the tip of the graphite lead core of 6B, 5B, 3B, B, F, H, 3H, 4H, 5H, 6H, 7H, 8H, 9H (see
5.1);
--- Changed the requirements for 4B, 2B, 2H high-grade graphite lead core wear (see 5.1, 4.1 of the.2011 edition);
--- Increased the requirements and test methods for graphite lead core slip (B method) (see 5.1, 7.3);
--- Changed the requirements for the performance of colored lead cores (see 5.2, 4.1 of the.2011 edition);
--- Increased the requirements and test methods for the light resistance of colored lead cores (see 5.2, 7.6);
--- Added the requirements for broken cores in the shaft of 6B, 5B, 3B, and B ordinary pencils (see 5.6);
--- Increased the requirements and test methods for phthalate plasticizers (see 5.8, 7.15);
--- Increased test conditions and materials (see Chapter 6);
--- Changed the test methods for core tip force, wear, concentration, hardness and sliding core (see 7.1, 7.2, 7.4, 7.5, 7.8,.2011 edition of
5.1, 5.3, 5.5, 5.2, 5.7);
--- Changed the sampling method of type inspection samples (see 8.2.3, 6.2.2 of the.2011 edition);
--- Changed the representation of the quality grade mark on the sales package (see 9.1.2, 7.1.2 of the.2011 edition).
Please note that some content of this document may be patented. The issuing agency of this document assumes no responsibility for identifying patents.
This document is proposed by China National Light Industry Federation.
This document is under the jurisdiction of the National Pen Standardization Technical Committee (SAC/TC378).
This document is drafted by. China First Pencil Co., Ltd., Anshuo Stationery (Shanghai) Co., Ltd., Shanghai Pen Industry Research Institute
Research Institute, Shanghai Institute of Quality Supervision and Inspection Technology, Deli Group Co., Ltd., Beifa Group Co., Ltd., National Stationery Quality
Supervision and Inspection Center, Shanghai Chenguang Stationery Co., Ltd., Shangzhi Pearl Pen Co., Ltd., Zhejiang Hongxing Stationery Co., Ltd.,
Shenzhen Qixin Group Co., Ltd., Qingdao Inge Cultural and Educational Products Co., Ltd., Guangdong Jinwannian Stationery Co., Ltd., Harbin China
Standard Pencil Co., Ltd., Wenzhou Tianjiao Pen Co., Ltd., Zhejiang Jiuling Brush Co., Ltd., Jinan Bee Pen Co., Ltd., Shanghai Pen
Technical Service Co., Ltd., Wenzhou Hobby Pen Co., Ltd., Wenzhou Tianfeng Stationery Co., Ltd., Yiwu Aoxiang Stationery Co., Ltd., Zhen
Color Stationery Co., Ltd., Zhejiang Best Softening Board Co., Ltd.
The main drafters of this document. Zhang Bingyang, Huang Weihu, Ma Yuqi, Xu Peifeng, Chen Jingqiang.
The previous versions of this document and its superseded documents are as follows.
---First published in 1959 as GB 149-1959, first revised in 1975, second revised in 1987, third in.1995
revision;
---Adjusted to light industry standard QB/T 2774-2006 in.2006;
---The second release in.2011 was GB/T 26704-2011;
---This is the first revision.
pencil
1 Scope
This document specifies the classification, requirements, test conditions and materials, test methods, inspection rules and markings, packaging, transportation and storage of pencils.
This document applies to graphite and coloured pencils with barrels made of wood.
This document does not apply to charcoal pencils and special purpose pencils.
2 Normative references
The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations
documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to
this document.
GB/T 191 Graphical signs of packaging, storage and transportation
GB/T 250 Textile color fastness test gray sample card for evaluating discoloration
GB/T 451.2 Determination of Quantity of Paper and Board
GB/T 451.3 Determination of Thickness of Paper and Board
GB/T 456 Determination of smoothness of paper and board (Buick method)
GB/T 1543 Determination of Opacity of Paper and Board (Paper Backing) (Diffuse Reflection Method)
GB/T 2828.1 Counting Sampling Inspection Procedure Part 1.Lot-by-Lot Inspection Sampling Plan Retrieved by Acceptance Quality Limit (AQL)
Determination of GB/T 7974 paper, paperboard and pulp blue light diffuse reflection factor D65 brightness (diffuse/vertical method, outdoor sunlight conditions)
GB/T 8427 Textiles Color Fastness Test to Artificial Light Color Fastness. Xenon Arc
GB/T 12654-2018 Writing paper
GB 21027 General requirements for safety of student supplies
GB/T 39024-2020 Classification and diameter of black lead lead for wooden pencils
3 Terms and Definitions
Terms and definitions defined in GB/T 39024-2020 apply to this document.
4 categories
4.1 Pencils are classified into graphite pencils and colored pencils according to their lead core materials, and graphite pencils are classified into ordinary products and high-end products.
4.2 Graphite pencils are divided into 6B, 5B, 4B, 3B, 2B, B, HB, F, H, 2H, 3H, 4H, 5H, 6H, 7H, 8H, 9H according to their hardness.
17 species.
4.3 Colored pencils (including red and blue pencils) are classified according to the number of colors of a single or complete set of products.
5 Requirements
5.1 The performance of graphite pencil lead shall meet the requirements of Table 1.
......
GB/T 26704-2011
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 97.180
Y 50
Pencils
铅笔
ISSUED ON: JUNE 16, 2011
IMPLEMENTED ON: DECEMBER 01, 2011
Issued by: General Administration of Quality Supervision, Inspection
and Quarantine;
Standardization Administration of the People’s Republic of
China.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative references ... 5
3 Classification ... 5
4 Requirements ... 6
5 Test method ... 7
6 Inspection rules ... 16
7 Marking, packaging, transportation and storage ... 18
Appendix A (Normative) Recommended pencil diameter ... 20
Pencils
1 Scope
This Standard specifies the classification, requirements, test method,
inspection rule and signs, packaging, transportation, and storage of pencils.
This Standard applies to graphite pencils and colored pencils.
This Standard does not apply to water-soluble colored pencils and special-
purpose pencils.
2 Normative references
The terms in the following documents become the terms of this Standard by
reference to this Standard. For dated references, all subsequent amendments
(not including errata content) or revisions do not apply to this standard. However,
parties to agreements that are based on this Standard are encouraged to study
whether the latest versions of these documents can be used. For undated
references, the latest edition applies to this Standard.
GB/T 191, Packaging - Pictorial marking for handling of goods (GB/T 191-
2008, ISO 780:1997, MOD)
GB/T 2828.1-2003, Sampling procedures for inspection by attributes - Part
1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot
inspection (ISO 2859-1:1999, IDT)
GB/T 6388, Transport package shipping mark
GB 21027-2007, Request in common use of security for student articles
3 Classification
3.1 Pencils are divided into graphite pencils and colored pencils according to
their lead materials, and are divided into ordinary products and advanced
products.
3.2 Graphite pencils are divided into 17 types, 6B, 5B, 4B, 3B, 2B, B, HB, F, H,
2H, 3H, 4H, 5H, 6H, 7H, 8H, 9H, according to their hardness.
3.3 Colored pencils are classified by color combination.
a) lead tip force tester;
b) oven;
c) desiccator;
d) lead tip gauge board.
5.1.3 Methods and steps
5.1.3.1 The colored pencil shall be placed in an oven at 35°C ~ 40°C for 24
hours; then, place it in a desiccator to cool for more than 12 hours.
5.1.3.2 Roll the tip of the to-be-tested pencil in a pencil sharpener at 20° ± 1°;
then, insert the lead tip into the lead tip gauge board; use metallographic
sandpaper to smooth the exposed part. For colored pencils and 3B ~ 6B
graphite pencils, use a 1.2 mm-bore lead tip gauge board; for 2B ~ 9H graphite
pencils, use a 0.8 mm-bore lead tip gauge board.
5.1.3.3 Install the pencil that is gauged on a pencil holder that is tilted at 45°;
align the lead tip with the midpoint of the force carrier and tighten.
5.1.3.4 Start the motor. When the force carrier rises to the lead tip and has
damages (including crushing, cracking, breaking, etc.), immediately turn off the
motor; the index value of the pointer is the lead tip force value.
5.2 Hardness test
5.2.1 Test conditions
a) ambient temperature: 20°C ± 2°C;
b) relative humidity: 50% ~ 65%.
5.2.2 Instruments and materials
a) micro hardness tester;
b) lead tip gauge board.
5.2.3 Methods and steps
5.2.3.1 Take both the lead tips with the highest and lowest force on the lead tip
as samples. Use metallographic sandpaper to smooth the end surface of the
sample; observe it under the microscope of a micro hardness tester. The
fineness of the end surface of the sample shall prevail.
5.2.3.2 Select the load according to Table 5 and select a hold time of 10 s.
7.028 -- correction factor;
l -- the length of the longer diagonal line of the indentation, in micrometers (μm).
Express the calculation result to the single digit.
5.3 Abrasion test
5.3.1 Test conditions
a) ambient temperature: 20°C ± 2°C;
b) relative humidity: 50% ~ 65%.
5.3.2 Instruments and materials
a) abrasion meter;
b) 80 g/m2 writing paper (GB/T 12654);
c) oven;
d) desiccator;
e) lead tip gauge board.
5.3.3 Methods and steps
5.3.3.1 Put the writing paper in an oven at 30°C ± 3°C for 2 h; then, cool it in a
drying box for 2 h and take it out; then, place it in a plastic bag or a desiccant-
free desiccator; use it within one week. When in use, face the front side of the
paper up; attach the ring to the revolving drum of the abrasion meter.
5.3.3.2 Take the pencil whose lead tip force is the lowest as the test pencil.
5.3.3.3 Roll the tip of the pencil in a pencil sharpener at 20° ± 1°; then, insert
the lead tip into the lead tip gauge board; use metallographic sandpaper to
smooth the exposed part. For colored pencils and B ~ 6B graphite pencils, use
a 0.8 mm-bore lead tip gauge board. For HB ~ 9H graphite pencils, use a 0.7
mm-bore lead tip gauge board.
5.3.3.4 Connect the clutch of the abrasion meter; then, insert the test pencil into
the pencil holder; adjust the weight on the pencil holder lever to balance it; add
a 300 g weight to the pencil holder; place the counter and dial indicator to zero
separately.
5.3.3.5 Turn on the power; rotate the abrasion meter revolving drum; turn off
the power when it revolves 100 circles. At this time, the value on the dial
indicator is the abrasion value of the lead.
c) 210 g/m2 slab printed coating base paper;
d) lead tip gauge board.
5.5.3 Methods and steps
5.5.3.1 Take the pencil whose lead tip force is the highest as the test pencil.
5.5.3.2 Roll the tip of the pencil in a pencil sharpener at 20° ± 1°; then, insert
the lead tip into the lead tip gauge board; use metallographic sandpaper to
smooth the exposed part. For 6B ~ B graphite pencils, use a 0.7 mm-bore lead
tip gauge board. For HB ~ 9H graphite pencils, use a 0.6 mm-bore lead tip
gauge board.
5.5.3.3 Install the rubber printed coating base paper on the smooth metal ring
plate of the cross scribing machine; then, insert the test pencil into the pencil
holder and tighten it; adjust the weight on the pencil holder level to balance it;
add a 500 g weight; shake the handle to make the lead come into contact with
the coating base paper and scribe. Draw 15 lines at a time; each line is 60 mm
in length. After each 15 lines, rotate 45° in order; then, continue the scribe;
make 4 times in total. Take a square with a length of 25 mm ± 1 mm at the
center of the scribing line as the sample paper.
5.5.3.4 Adjust the photoelectric colorimeter; select an interference filter whose
center wavelength is 450 nm; place the sample paper in a dark box; measure
3 times; record the value that is shown on each “-logT” scale; obtain the average
as the final result.
5.6 Pencil lead diameter, pencil diameter and pencil length test
5.6.1 Test tools
a) micrometer whose resolution is not less than 0.01 mm;
b) Vernier caliper whose resolution is not less than 0.02 mm;
c) steel ruler whose resolution is not less than 0.5 mm;
5.6.2 Test method
Use a steel ruler or a Vernier caliper to measure the pencil length. Use a
micrometer to measure the lead diameter; use a Vernier caliper to measure the
pencil diameter. Measure 3 points on each lead or pencil separately, and take
the average value as the final result.
5.7 Slip lead test
5.7.1 Test equipment
5.9.2 Methods and steps
Fix the test pencil on the fixture of the tensile tester; then, use the clawing jaw
to clamp the eraser head; load the eraser head with 9.8 N and keep it for 10 s;
check that the eraser head and aluminum hoop do not fall off.
5.10 Pencil coating test
5.10.1 Test equipment
a) constant-temperature oven;
b) refrigerator.
5.10.2 Methods and steps
Put the test pencil in a constant-temperature oven whose temperature is 45°C
± 2°C for 30 min; then, take it out; put it in a room whose temperature is 20°C
± 2°C and the relative humidity is 50% ~ 65% for 30 min; then, put the test
pencil in a plastic bag, and tighten the mouth of the bag; put it in a refrigerator
whose temperature is -10°C ± 2°C for 30 minutes; then, take it out; check that
the coating of the pencil does not fall off or crack.
5.11 Pencil binding fastness test
Immerse the test pencil in the water at 30°C ± 2°C for 1 h; then, take it out; use
both hands to twist the two ends of the pencil in reverse; observe that the pencil
shall not be unglued.
5.12 In-pencil broken lead test
Remove the paint at the seams of the test pencil; for pencil with eraser, remove
the eraser head and aluminum hoop; then, place the test pencil in boiling water
to cook until it is unglued; observe the lead tip; it shall meet the requirements
that are specified in Table 4.
5.13 Appearance test
5.13.1 Use a pencil sharpener to sharpen the test pencil; the sharpened surface
shall be smooth.
5.13.2 Visually inspect under 200 lx ~ 250 lx illumination; it shall meet the
requirements that are specified in Table 4.
5.14 Migratable element content test
The migratable element content test shall be carried out in accordance with 4.1
of GB 21027-2007.
6.3.5 Determining principle of batch quality: according to GB/T 2828.1-2003, it
is expressed as the percentage of single non-conforming product. Only when
the product reaches the acceptance quality limits that are specified by category
B and category C at the same time, the inspection batch can be judged as
qualified.
6.3.6 Dispose according to the following principles after batch inspection:
a) Products that pass the factory inspection shall be attached with a product
certificate (chapter) before leaving the factory;
b) The unqualified batch of factory inspection shall be returned to the
production department for 100% reorganization and rework. After
reorganization and rework, the inspection may be resubmitted again. The
corresponding tightened inspection sampling scheme shall be adopted for
the resubmitted batch. If the resubmitted batch still fails, the batch of
products is unqualified.
7 Marking, packaging, transportation and storage
7.1 Markings
7.1.1 Each pencil shall be marked as follows:
a) the name of the manufacturing enterprise or its short name or trademark;
b) product model;
c) Graphite pencils shall have hardness signs.
7.1.2 The pencil sales package2 shall have signs such as product name and
trademark, product model, number of implementation standards, count, quality
level, name of manufacturer, and address.
7.1.3 The pencil transport package shall be marked with the product name and
trademark, product model, number of implementation standard, name of the
manufacturer, address, weight, volume, number of contents, and date of
manufacture.
7.1.4 The pictogram signs and shipping and receiving signs on the transport
packaging shall meet the requirements of GB/T 191 and GB/T 6388.
7.2 Packaging
7.2.1 The product certificate (chapter) shall be attached to the package.
2 It refers to the smallest packaging unit that can be sold.
......
|