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peter@wujiapack.com
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Rongcheng Wujia Plastic Co.,Ltd

Office Address: 81 Huize St, Heyang East Road, Rongcheng, Shandong, China

Factory Address: 81 Huize St, Heyang East Road, Rongcheng, Shandong, China

Contacts: PETER WU

Phone: 86-15098125996

Fax: 86-0631-7584439

E-mail: peter@wujiapack.com

Zip code: 264300

News

Zipper Bag Most Prone To The Top Ten Failures

Rongcheng Wujia Plastic Co.,Ltd | Updated: Oct 09, 2017

Zipper bag most prone to the top ten failures

The bag is bent

1, the tension between the film tension and the chain tension is not good.

(1) The tension of the adjustment roller is too weak.

(2) The zipper bag is too tight.

(3) The zipper pocket is not sliding well.

(4) The slot of the zipper plate is too narrow.

(5) Slip plate slippery is not good.

(6) The slippage of the film at the swash plate / M plate is not good.

2, zipper heat sealing temperature is too high.

3, the rubber band under the zipper tension tension tension roller tightening.

The zippers are badly sealed

1, zipper heat sealing plate mixed with foreign matter (polyethylene residue, dust).

2, zipper frame installed Teflon surface is damaged or foreign matter.

3, zipper plate Teflon surface is damaged or foreign matter.

4, zipper plate has local damage or deformation.

Any one of the heat-sealing portions of the zipper pocket is not heat-sealed or the heat-sealing strength is extremely weak

1, the thickness of the zipper bag is not appropriate.

2, the zipper heat sealing plate position and the band is not aligned.

The welding of the zipper anastomosis

1, zipper heat sealing temperature is too high.

2, zipper heat seal position offset, pressure on the anastomosis site.

3, waiting for too long and affected by the preheating.

There is no problem with the tightening roller, but there is a deviation in the edge and pattern of the zipper frame

1, the position of the zipper plate is too low, the lower side of the film with the next side heat sealing, cooling plate friction. Or by the preheating of the heat seal on the underside.

2, the lower side of the zipper rubber roller is not well sandwiched the film, the film slip.

3, the position of the upper separation roller of the rubber roller on the lower side of the slide fastener is not set.

4, the tension adjustment roller tension is too small.

The zipper's anastomosis is too small

1, the original zipper bag their anastomosis strength is too small.

2, the zipper bag on the opening side / inner bag side of the heat cover set anti.

3, zipper heat sealing temperature set too high, so that the anastomosis deformation, especially the concave open.

4, in the zipper plate, the film flow and zipper plate angle deviation, the edge of the zipper plate friction to the anastomosis.

5, rubber roller pressure on the anastomosis site.

6, the edge of the rubber roller groove friction on the anastomosis.

7, two bags, the film (especially OPP / CPP) heat and shrink, zipper plate in the middle of the two series of bags with the plate friction to the anastomosis.

8, the top cooling plate too wide, pressure on the anastomosis.

9, the lower side of the rubber roller string up and down the gap is too small, zipper anastomosis was pressed too tight.

At the point of heat sealing, the gas is overburdened

1, the vertical heat sealing temperature is set too high.

2, the vertical pressure is too large, the edge of the heat sealing pressure to the rubber platform to go.

3, rubber Taiwan by wear or rugged.

4, the cooling plate (on) the width is too large, no pressure on the top heat sealing.

5, in the longitudinal seal of the Teflon roll, the use of the coarse Teflon cloth, so that the air was sucked into the.

Horizontal heat sealing, the gas backlog too much

1, to strengthen the block heat sealing, the heat sealing plate is not enough to press the film.

2, the pressure of the silicone rubber (especially the upstream side) appears concave or uneven surface.

3, heat sealing plate and the Taiwan silicone rubber on the use of the coarse Teflon cloth, the air absorbed into the lines.

In the depressed part of the zipper, leave the core or leave the liquid

1, the zipper point of the heat seal gap is too small.

2, the zipper point heat sealing temperature is set too low.

At the point of heat sealing and transverse heat sealing, aluminum, ink and other separation

1, the reason for the separation of the dissolved layer of PE or CPP dissolution rate and AL or ink stretching speed caused by different.

2, the countermeasure is to reduce the running speed, to ensure adequate heat sealing time.

3, not to strengthen the block heat sealing pressure.

4, to strengthen the block heat seal, adjust the gap, slowly melting.

5, hit the round to strengthen the edge of the heat sealing plate, so that AL or ink expansion of the edge is not cut off.

6, try to use multi-section to strengthen the block heat seal.

7, the use of heat sealing plate, cooling plate with the coarse Teflon cloth, absorbed into the glass fiber mesh.


Rongcheng Wujia Plastic Co.,Ltd