LY/T 1279-2020Polyvinyl chloride film overlaid wood-based panels (English PDF)

4.1 Classification by substrate type

a) Polyvinyl chloride film facing particle board;

b) PVC film facing medium density fiberboard;

c) PVC film facing high-density fiberboard;

d) PVC film facing plywood;

e) PVC film veneer blockboard;

f) PVC film facing non-structural laminated material.

4.2 Classification by finish

a) Single-sided polyvinyl chloride film facing man-made board;

b) Double-sided PVC film facing man-made board.

5.1 Raw materials

5.1.1 Polyvinyl chloride film

The PVC film used in the PVC film facing artificial board should meet the product quality requirements of the printed film in GB/T 3830-2008.

5.1.2 Artificial board substrate

5.1.2.1 Particleboard for base material

The physical and chemical properties of the particleboard used as the base material of the polyvinyl chloride film facing artificial board should meet the dry state specified in 6.3 of GB/T 4897-2015 the physical and chemical performance requirements of the furniture-type particleboard (P2 type) used under.

5.1.2.2 Medium density fiberboard for base material

The physical and chemical properties of the medium-density fiberboard used for the base material of the polyvinyl chloride film facing wood-based panels should meet the dry conditions specified in GB/T 11718-2009.

The furniture-type medium density fiberboard (MDF-FN REG) used in the dry state requires physical and chemical properties.

5.1.2.3 High-density fiberboard for base material

The physical and chemical properties of the high-density fiberboard used for the base material of PVC film facing artificial board should meet the general requirements specified in GB/T 31765-2015 5.3 General high-density fiberboard (HDF-GP REG) physical and chemical performance requirements.

5.1.2.4 Plywood for base material

The physical and chemical properties of the plywood used as the base material of the polyvinyl chloride film veneer wood-based panel should meet the type II plywood specified in 5.3 of GB/T 9846-2015 Physical and chemical performance requirements.

5.1.2.5 Blockboard for base material

The physical and chemical properties of the blockboard used for the base material of the polyvinyl chloride film facing artificial board should meet the requirements of 6.4 in GB/T 5849-2016.

5.1.2.6 Non-structural laminated materials for base materials

The physical and chemical properties of the non-structural laminated material used for the base material of the polyvinyl chloride film facing wood-based panel shall meet the requirements of 5.4 of LY/T 1787-2016.

5.2 Specifications and deviations

5.2.1 Length and width

The length, width and allowable deviation of PVC film facing man-made panels shall meet the requirements of Table 1.

5.2.2 Thickness

The thickness and allowable deviation of PVC film facing man-made panels shall meet the requirements of Table 2.

5.2.3 Verticality deviation

The vertical deviation of PVC film facing wood-based panels should meet the requirements of the corresponding base material standards.

5.2.4 Flatness

The flatness of polyvinyl chloride film facing man-made panels should meet the requirements of the corresponding base material standards.

5.2.5 Edge straightness

The edge straightness of the polyvinyl chloride film facing wood-based panel should meet the requirements of the corresponding base material standard.

5.3 Appearance quality

According to the appearance and quality of the product, it is divided into three grades. excellent, first-class and qualified. PVC film facing man-made board should ensure the decoration surface the appearance quality meets the requirements of Table 3.The back side of the single-sided PVC film facing man-made board should meet the appearance quality requirements of the corresponding substrate qualified product begging.

5.4 Physical and chemical properties

The physical and chemical properties of PVC film facing wood-based panels should meet the requirements of Table 4.

5.5 Limits of hazardous substances

The limit of harmful substances for PVC film facing wood-based panels shall meet the requirements of Table 5.

6.1 Size measurement

6.1.1 Length and width

According to the provisions of GB/T 19367-2009 in 8.2.

6.1.2 Thickness

According to the provisions of GB/T 19367-2009 in 8.1.

6.1.3 Verticality deviation

Carry out in accordance with the provisions of GB/T 19367-2009 in 8.3.

6.1.4 Flatness

Carry out in accordance with the provisions of GB/T 19367-2009 in 8.5.

6.1.5 Edge straightness

According to the provisions of GB/T 19367-2009 in 8.4.

6.2 Specimen sampling and size requirements

6.2.1 Test pieces for physical and chemical properties

6.2.1.1 Distribution of the sample in the template

For each piece of polyvinyl chloride film facing man-made board for testing, prepare three samples with the same specifications as shown in Figure 1, and their numbers are A, B, C.

Unit is mm

Figure 1 Schematic diagram of sample preparation

6.2.1.2 Distribution of test pieces in samples A, B and C

The distribution and numbering of test pieces in samples A, B, and C are shown in Figure 2.

Unit is mm

Figure 2 Schematic diagram of sample preparation

6.2.1.3 Number, size and quantity of test pieces

The number, size and quantity of test pieces required for each test item are shown in Table 6.

6.2.2 Hazardous substances limit test piece

6.2.2.1 Vinyl chloride monomer limit

Carry out according to the provisions of 5 in GB 18586-2001, cut 0.3g~0.5g sample from the polyvinyl chloride film layer of the sample.

6.2.2.2 Limits of soluble lead and soluble cadmium

Carry out according to GB 18586-2001 provision 5, carefully peel off the PVC film layer from the sample, try not to attach the substrate, Rinse with deionized water and air dry.

6.2.2.3 Diester phthalate, butyl benzyl phthalate, di-n-butyl phthalate, di-n-octyl phthalate, Content limit of diisodecyl formate and diisononyl phthalate Carry out according to GB/T 22048-2015 clause 7, cut about 1.0 g sample from the PVC film layer of the sample.

6.2.2.4 Formaldehyde emission limit

According to the provisions of GB 18580.

6.3 Test method

6.3.1 Appearance quality

The inspection environment requirements are as follows.

a) The height of the inspection platform is about 700 mm.

b) The lighting source is three 40 W fluorescent tubes, the distance between the tubes is about 400 mm, and the length of the tube is consistent with the length of the board.

The height from the platform is about 2 m.

c) Inspectors should conduct inspections one by one at both ends of the board length, with a viewing distance of 0.5 m to 1.5 m and a viewing angle of 30° to 90°. According to Table 3 Determine its level.

6.3.2 Physical and chemical properties

6.3.2.1 Water content

According to the provisions of 4.3 in GB/T 17657-2013.

6.3.2.2 Surface bonding strength

According to the provisions of 4.16 in GB/T 17657-2013, the test piece needs to be balanced.

6.3.2.3 Surface scratch resistance

According to the provisions of 4.39 in GB/T 17657-2013.

6.3.2.4 Surface resistance to cold and heat cycles

According to the provisions of 4.38 in GB/T 17657-2013.

6.3.2.5 Color stability

Carry out in accordance with the provisions of 4.31 in GB/T 17657-2013.

6.3.2.6 Surface dry heat resistance

According to the provisions of 4.46 in GB/T 17657-2013.

6.3.2.7 Surface pollution resistance

According to the provisions of 4.41 in GB/T 17657-2013, acetone and black coffee are used as routine test pollutants.

6.3.2.8 Surface wear resistance

According to the provisions of 4.42 in GB/T 17657-2013.

6.3.2.9 Impact resistance

Carry out in accordance with the provisions of 4.51 in GB/T 17657-2013.

6.3.3 Limits of hazardous substances

6.3.3.1 Vinyl chloride monomer

Carry out according to GB/T 4615-2013.

6.3.3.2 Soluble lead and cadmium

According to the provisions of 5.4 of GB 18586-2001.

6.3.3.3 Diester phthalate, butyl benzyl phthalate, di-n-butyl phthalate, di-n-octyl phthalate, Diisodecyl formate, diisononyl phthalate According to the regulations of GB/T 22048-2015.

6.3.3.4 Formaldehyde emission

According to the provisions of GB 18580.

7.1 Inspection classification

7.1.1 The factory inspection shall include the following items.

a) Appearance quality;

b) Specifications and dimensions;

c) Surface wear resistance and surface pollution resistance in physical and chemical properties.

7.1.2 The type inspection shall include all the items in the technical requirements for appearance quality, specifications and dimensions, physical and chemical properties and hazardous substances limit. Under when one of the conditions is listed, type inspection should be carried out.

a) When the raw and auxiliary materials and production process undergo major changes;

b) When production has been suspended for more than three months, when production resumes;

c) During normal production, the inspection shall be no less than twice a year;

d) When a new product is put into production or converted;

e) When the quality supervision department proposes type inspection requirements.

7.2 Sampling plan

7.2.1 Appearance quality

7.2.2 Specifications

7.2.3 Physical and chemical properties

The physical and chemical performance inspection shall adopt the re-inspection sampling plan according to Table 9.Take n1 boards for the first time, if an indicator in the test result is unqualified, then Take n2 boards for the second time and re-inspect the unqualified items.

7.2.4 Limits of hazardous substances

From the qualified batches inspected for appearance, quality, specifications and dimensions, a sufficient number of PVC film facing artificial panels are randomly selected for harmful Substance limit inspection. If the first inspection result does not meet the corresponding technical requirements, it is allowed to double the non-conforming items in the batch of samples.

Sample re-inspection.

7.3 Judgment rules

7.3.1 Specification size and its deviation judgment

When the specifications and deviations meet the technical requirements in 5.2 and Table 8, the specifications and deviations of the batch of samples are determined to be qualified, otherwise Determined as unqualified.

7.3.2 Appearance quality judgment

When the appearance quality meets the technical requirements of the corresponding grade in 5.3 and Table 7, it is judged that the appearance quality of the batch of samples meets the corresponding grade, otherwise it is judged Determined as not meeting the corresponding level.

7.3.3 Determination of physical and chemical properties

Water content, surface bonding strength, surface scratch resistance, surface resistance to cold and heat cycles, color stability, surface resistance to dry heat, when the initial test pieces of surface pollution resistance, surface wear resistance, and impact resistance meet the corresponding technical requirements, the batch of PVC films the corresponding performance of the veneer wood-based panel is judged as qualified; when a certain performance test piece cannot meet the corresponding technical requirements, the performance is allowed Double sampling re-inspection is carried out, and if all the re-inspection specimens meet the corresponding technical requirements, it is judged as qualified, otherwise it is judged as unqualified.

7.3.4 Limits of hazardous substances

When the test result of the limit of hazardous substances meets the corresponding technical requirements, it is judged as qualified, otherwise it is judged as unqualified.

7.3.5 Comprehensive judgment

When the product specifications and deviations, appearance quality, physical and chemical properties, and hazardous substance limits meet the technical requirements of the corresponding level, the judgment it is determined as conforming; otherwise, it is determined as not meeting the corresponding level.

8.1 Identification

The product should be stamped with a label indicating the name of the manufacturer, product name, product category, formaldehyde emission, grade, production date, etc.

8.2 Packaging

Product packaging should be packaged separately according to different types, specifications and grades. Each package should indicate the name of the manufacturer, site, trademark, and implementation Standard, formaldehyde emission mark, product name, specification, grade, quantity, production date.

8.3 Storage

The storage foundation of the product should be flat, the stacking should be neat, the board surface should not be in contact with the ground, and stacked according to different categories, specifications, and grades.

The stack should be marked accordingly. The storage place should be protected from rain, moisture, sun and fire sources.

8.4 Transportation

The mode of transportation of the product shall be negotiated between the supplier and the buyer. During transportation, scratches and bumps should be avoided, and it should be protected from rain, moisture and sun.