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LY/T 1057-2020: Overlaid particleboard for ship
Status: Valid LY/T 1057: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| LY/T 1057-2020 | English | 229 |
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Overlaid particleboard for ship
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LY/T 1057-2020
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| LY 1057.1-1991 | English | 119 |
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(Marine veneer particleboard definition and classification)
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LY 1057.1-1991
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PDF similar to LY/T 1057-2020
Basic data | Standard ID | LY/T 1057-2020 (LY/T1057-2020) | | Description (Translated English) | Overlaid particleboard for ship | | Sector / Industry | Forestry Industry Standard (Recommended) | | Classification of Chinese Standard | B70 | | Classification of International Standard | 79.060.20 | | Word Count Estimation | 10,110 | | Date of Issue | 2020-03-30 | | Date of Implementation | 2020-10-01 | | Issuing agency(ies) | State Forestry and Grassland Administration | LY/T 1057-2020: Overlaid particleboard for ship---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Overlaid particleboard for ship
ICS 79.060.20
B 70
LY
People's Republic of China Forestry Industry Standard
Replace LY 1057.1～1057.3-91
Veneer particle board for ship
Issued by the State Forestry and Grassland Administration
2020-03-30 released
2020-10-01 implementation
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard is the revision of LY 1057.1～1057.3-91 "Marine Veneer Particleboard". This standard and LY 1057.1～1057.3-91
In comparison, the main technical content changes are as follows.
- Combine the original LY 1057.1～1057.3-91 standard into one standard;
--Modified the definition of marine veneer particleboard;
- Deleted the grade of marine veneer particleboard;
--Modified the test method and technical requirements for the appearance quality of marine veneer particleboard;
-Modified the test method and technical requirements of the size and tolerance of the marine veneer particleboard;
-Increased the elastic modulus, internal bonding strength, surface bonding strength, and surface resistance to cold and heat cycles in the physical and mechanical properties of marine veneer particleboard
Test methods and technical requirements for ring and surface pollution corrosion resistance, surface crack resistance, and surface resistance to water vapor;
--Modified the water absorption thickness expansion rate, vertical screw holding force and wear resistance of the physical and mechanical properties of marine veneer particleboard (100 revolutions
Weightlessness) test methods and technical requirements;
- Deleted the plane tensile strength of the physical and mechanical properties of the marine veneer particleboard;
--- Added the test methods and technical requirements for the safety performance of the marine veneer particleboard;
-Deleted the classification of marine veneer particleboard;
-The inspection rules for marine veneer particleboard have been revised;
-Modified the marking, storage and transportation requirements of marine veneer particleboard.
Please note that certain contents of this document may involve patents. The issuing agency of this document is not responsible for identifying these patents.
This standard was proposed and managed by the National Wood-based Panel Standardization Technical Committee (SAC/TC 198).
Drafting organizations of this standard. National Furniture and Indoor Environmental Quality Supervision and Inspection Center, Beijing Shengda Huayuan Technology Co., Ltd., Dehua Tubao
Bao Decoration New Materials Co., Ltd.
The main drafters of this standard. Yu Xuefei, Luo Wensheng, Peng Yiqing, Zhao Jing, Huo Liping, Ye Jiaoyou.
The previous versions of the standard replaced by this standard are as follows.
Veneer particle board for ship
1 Scope
This standard specifies the terms and definitions, technical requirements, inspection methods, inspection rules, sampling methods and determination principles for marine veneer particleboard.
Rules, marking, packaging, transportation and storage, etc.
This standard applies to veneer particleboard for ships.
2 Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article
Pieces. For undated references, the latest version (including all amendments) applies to this document.
GB/T 4897-2015 Particleboard
GB/T 15102-2017 Impregnated film paper facing fiberboard and particleboard
GB/T 17657-2013 Test method for physical and chemical properties of wood-based panels and facing wood-based panels
GB 18580 The limit of formaldehyde emission in wood-based panels and products of interior decoration materials
"International Fire Test Procedure Application Code" (IMO PTPC) December 3,.2010 International Maritime Organization
3 Terms and definitions
The following terms and definitions defined in GB/T 15102-2017 and GB/T 15102-2017 apply to this document.
3.1
The high-pressure decorative laminated board with impregnated film paper and bottom paper or thermosetting resin impregnated paper is directly pressed on the surface of the particleboard, which is flame retardant
Can veneer particle board.
4 Technical requirements
4.1 Appearance quality
The appearance quality of the marine veneer particleboard should meet the requirements of Table 1.
4.2 Specifications and deviations
The specifications, dimensions and deviations of the marine veneer particleboard shall meet the requirements of Table 2.
4.3 Physical and mechanical properties
The physical and mechanical properties of marine veneer particleboard should meet the requirements of Table 3.
5 Inspection method
5.1 Sampling method
Samples and samples should be taken from products stored for more than 24 hours after production. The plate sample is carried out according to Figure 1, and cut into 5 samples, each sample
Mark the number, and mark "△" in the upper right corner. Among them, No. 1, No. 3, No. 5 samples are used to prepare No. ①-⑩ test pieces, No. 2 and No. 4
The sample is used to prepare "arbitrary" test pieces. From No. 1, No. 3, and No. 5 samples, make test pieces according to Figure 2.When there is a defect in the prescribed place for taking the test piece,
The position where the specimen is prepared can be moved appropriately. When the plate thickness is greater than 25mm, the static flexural strength test piece (the size exceeds 550mm) can be randomly selected in the sample
Take the position, but keep 3 in the vertical and horizontal directions, and keep the original orientation of the other numbered specimens. The size, quantity and number of the test pieces are shown in Table 5.
The edges and corners of the test piece should be straight and free of edges. The allowable deviation of length is ±0.5mm.
5.2 Inspection method
The inspection method of marine veneer particleboard shall be carried out in accordance with Table 6.
6 Inspection rules
6.1 Inspection classification
6.1.1 Inspection is divided into factory inspection and type inspection.
6.1.2 Factory inspection
The factory inspection should include the following items.
a) Appearance quality;
b) Specifications and deviations;
c) In the physical and mechanical properties, the surface is wear-resistant, the surface is resistant to pollution and corrosion, the surface is resistant to cracking, and the surface is resistant to water vapor.
6.1.3 Type inspection
Type inspection shall include all items in appearance quality, specifications and dimensions, deviations and performance. In one of the following situations, the type
Type test.
a) When there are major changes in raw and auxiliary materials and production processes;
b) When production has been suspended for more than 3 months and production is resumed;
c) During normal production, there should be no less than 2 inspections per year, and it is advisable to average the divisions once each in the first and second half of the year;
d) When a new product is put into production or converted;
e) When the quality supervision department proposes inspection requirements.
6.2 Sampling method
6.2.1 General sampling rules
The same shift, the same specification, and the same type of products are one batch. For quality inspection, samples should be taken from the same batch of products as required, and the
The samples are inspected one by one, and the samples are counted by each piece.
6.2.2 Appearance quality
The sampling plan for appearance quality inspection shall be carried out in accordance with Table 7.
6.2.3 Specifications and deviations
Sampling plan for specification size and deviation inspection shall be carried out in accordance with Table 8.
6.2.4 Physical and mechanical properties, safety performance
The sampling plan for physical and mechanical properties and safety performance inspection shall be carried out in accordance with Table 9.
6.3 Judgment Principle
When the appearance quality, specification size and deviation, physical and mechanical properties and safety performance of the sample meet the following requirements, it will be judged as qualified, otherwise
Judged as unqualified.
--The appearance quality should meet the requirements of 4.1 and Table 7;
--The size and deviation should meet the requirements of 4.2 and Table 8;
--The arithmetic average of density, moisture content and screw holding force shall meet the requirements of 4.3;
--24 hours water absorption thickness expansion rate, internal bonding strength, static bending strength, elastic modulus, surface bonding strength of 95% x95%,
5% quantile x 5%, should meet the upper and lower specification limits of 4.3 μU, μL requirements;
-The surface resistance to cold and heat cycle test pieces are judged as qualified when they are qualified;
--The amount of formaldehyde released shall be in accordance with the determination rules of GB 18580;
--Surface flammability, smoke and toxicity shall be carried out in accordance with the determination rules of "International Fire Test Procedure Application Rules".
7 Identification, packaging, transportation and storage
7.1 Identification
Before the product is put into storage, the product name, specification, trademark, production date, formaldehyde emission limit mark and the
Flammability mark, etc.
7.2 Packaging
Products should be packaged separately according to product specifications when leaving the factory. The packaging should be moisture-proof and shock-proof. There should be an inspection certificate in the package, and the certificate should be marked
Manufacturer name, product name, trademark, specification model, quantity, implementation standard number, factory date, inspector code. Packaging
The product is protected from bumps and scratches. Packaging requirements can also be negotiated by both parties.
7.3 Transportation
The products should be stacked flat during transportation to prevent damage, and not be exposed to dampness, rain or exposure.
7.4 Storage
When the product is stored, the foundation should be level, and the stack should be neat, and the panel should not touch the ground. Products are stacked according to different specifications, each stack
There should be corresponding marks. The storage place should be protected from rain, moisture, sun and fire.
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