The impact of plywood production process on product quality (3)

Table 2 Common defects and improvement methods of paperless stitching machine operation

Defect name generation cause improvement method

Jigsaw ends

1 The glue time is not enough or the aging time is not enough after the glue is applied.

2 The end compound is not coated enough or has been dried.

3 The veneer itself is warped, the joint has a "crescent" shape or the veneer is not straight.

4 The heating roller temperature is insufficient.

1 Slow down the speed or extend the time of the rubberized board.

2 Pay attention to check the amount of glue at the end.

3 Improve the quality of the veneer and the quality of the drying, eliminate the “leaf edge”, “tight edge and bubble veneer”, and improve the quality of the whole side.

4 Increase the electric heating temperature.

The seam is not strong or too brittle

1 The compound is insufficiently cured or the room temperature is low, and the amount of the hardener is insufficient.

2 The quality of the rubber is not good, the adhesive layer is too brittle or the amount of glue is insufficient.

3 The electric heating temperature is insufficient or the vehicle speed is too fast.

4 The moisture content of the veneer is high.

1 Extend the glue time, increase the electric heating temperature or slightly increase the hardening dose.

2 Check the quality of the rubber compound and the amount of hardener is appropriate, increase the polyurethane emulsion of 1 5% to 20%, reduce the brittleness of the rubber, and check the amount of glue.

3 Increase the electric heating temperature.

4 Check the moisture content of the veneer.

Patchwork veneer coke paste 1 electric heating temperature is too high

2 The speed is too slow

1 Adjust the electric heating temperature.

2 Speed ​​up the car slightly.



Patchwork is not dense

1 Qi Qiqi

2 squeezed on the roller is not good

1 Check the edge tool for wear.

2 Check for wear and tear

Wallets:

Wallets or purses especially for money storage, credit cards also. It can also be a carry-on ornament or used for family photo. According to its style, wallets can be basically divided into medium and long purses and short wallets. Medium and long wallets are rectangular in shape and longer in length. If you have more stuff and put your wallet in your bag, choosing a medium-length bag will be better. Because medium and long wallets are more elegant than short ones. Short wallets are shorter in length and width, generally close to the square. If you always pack your money in your pocket, it's better to use a short purse.

WalletLong WalletWallets

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Wallets

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