Common Sense Problems When Choosing Zippers

In the course of using P zippers, there will be various kinds of anomalies due to incomplete knowledge of zipper products or improper operation. Here, we summarize and summarize some common anomalies in use and corresponding countermeasures.

The important hints of buying zippers are that zippers have different adaptations in different environments. Therefore, when purchasing zippers, they should give special suggestions to manufacturers: < /p >

< p > < strong > zipper used in what kind of products: < /strong > leather case, < a target= "_blank" href= "http://www.91se91.com/" > shoes > /a > boots, ski clothes, raincoats, tents, washed jeans or acidic large leather products and other special requirements.

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< p > two, < strong > requirements for zipper ingredients < /strong >, see whether it is necessary to do not contain AZO (AZO), do not contain nickel, can pass the needle, do you need the product environmental certificate, such as "Oeko-Tex Standard 100".

Attention should be paid to the use of zipper products: please pay attention to the following problems when using zippers: < /p >

< p > 1. color zipper (fabric and zipper tape are not identical, such as white fabric with black and red zipper tape). When placing orders, it must be stated that the color fastness must be better. Zippers must be verified before being tested, and can be put into production in large quantities. < /p >

< p > 2. nylon zipper used for PVC fabric or waterproof / skiing fabric (light coloured). Please note that the fabric will absorb stains in the zipper and cause stains on the fabric. When ordering, please specify: zipper oil yield control and test before commissioning; < /p >

< p > 3. all cotton belt metal zipper garment dyed after dyeing.

Because of the chemical reaction of Mickey teeth, detached parts, puller heads and top stops after acid / alkaline dyeing, they cause discoloration.

At present, our company can only add film to the metal parts such as pull head and Mickey tooth (which is paid), but we can not fully guarantee that the zipper does not produce chemical reaction.

Please proofread the sample before making sure that the zipper is suitable for the garment making process.

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< p > 4. white, nickel free, white nickel plated pull head for white cotton (such as wool products) on the color change (such as yellow, black, etc.), the main reason is that after bleaching, dyeing, after treatment is not cleaned, and chemical residues react.

Please fully clean the fabric until it is neutralized.

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< p > 5. 8#, 10# resin, metal pull head or larger volume pull sheet and round pull tab are not effective.

On the one hand, because of its large volume, another round type pull piece will produce magnetic field when testing needle, thereby affecting the effect of needle test.

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< p > 6. discolored metal zipper's black teeth and discolored teeth will pollute the material. Once the copper alloy is oxidized, it will turn black.

Do not seal the packaging bag, keep it ventilated, be careful not to be full of moisture (using damp proof paper, moisture-proof agent, the effect will be better).

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< p > 7. dyeing and polythene on the zipper, synthetic a target= "_blank" href= "http://www.91se91.com/" > leather < /a > a target= "_blank" href= "target=" > plasticizer, bonding agent, oil agent and other ingredients may react, and the phenomenon of dye pfer occurs, and the finished product needs to be separated from paper, and the state of preservation should be noted.

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< p > 8., due to the use of dye zipper or black zipper, the contact area between the material and the zipper will be polluted.

In the dyeing process of fabric, residual acid or oxidants react with chemicals so that the contact parts of the zippers and clothing can cause pollution. Please use fully washed fabrics and materials.

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< p > 9. washing process 1) after washing, the teeth of the zipper teeth are discolored or corroded and the processed drugs will weaken the drawing heads.

For washing and processing, it is better to use stronger spring head zippers for washing.

In order to prevent residual acid in washing process, please wash it fully to neutralize it.

With different processing types or types of drugs, the phenomenon of fabric weakening will appear. Washing and processing must be done first.

2) after washing, the self locking head is damaged.

When the zipper is washed in the open state, there will be sundries entering the pull head, making it easy to damage, so when washing and processing, please do it in the zipper closed state.

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< p > 10. correct washing method 1) before washing or putting into dryer, make sure that the zipper is closed and the pull head is fixed.

If open washing, the front end of the top will damage the cloth and the cloth will shrink.

2) alkaline strong detergent or chlorinated bleaching agent will melt wax or oil film on the zipper and pay special attention when using.

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< p > 11. proper material, proper temperature, correct ironing method 1) the temperature of the iron should change with the material, and the zipper has the appropriate temperature, so as to maintain the strength and beauty of the zipper.

2) when you press the zipper, you must close the zipper tightly. The zipper must be fixed in the normal position. Do not let the pulling head pull the piece back or erect, and it will start ironing after you have spread the cloth. Otherwise, something unexpected will happen.

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< p > 12. for other children's products, special attention should be paid when choosing zippers. Please select special stop.

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< p > < strong > notices of invisible zipper sewing < /strong > < /p >

< p > 1. invisible zipper sewing with special sewing machine < /p >

< p > 2. zipper seams must be retreated at both ends (< /p >).

< p > 3. should be stitched so that the zipper suture can become a straight line, and there must be no line segment blockage < /p >.

< p > 4. when sewing, do not sew on the chain teeth, prevent blockage and open belly < /p >.

< p > 5.. If the length of the zipper can not be punctual when ordering, please pay attention to the metal zipper of the company's invisible activity code < /p >.

< p > < strong > the color changing principle of metal zipper teeth < /strong > < /p >

< p > 1. The chemical properties of copper alloys are chemical reactions of acids, bases, oxidants or reducing agents.

Zippers may be discolourable when the chemicals left on the fabric are chemically reacted with the metal zipper's chain teeth, the pulling heads or the open ends.

This chemical reaction is more likely to occur under high temperature and high humidity conditions (sewing products are steamed through steam, sealed in plastic bags and kept for a long time, etc.).

This situation does not belong to the zipper quality problem.

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< p > two, chemical reaction and discoloration example 1. oxidation bleach (H2O2) to black (CuO) or red (CuO2) 2. reductive bleach (Na2S03) to black (CuO, CuS) or red (CuO2) 3. sulphide or HS2 gas excess conditions: Black (CuS) 4. CL2 gas surplus condition: pale yellow (5.) acid compounds and chromium compounds (()) to black (()), red (or) blue (6.) steam, ironing or wet wet blue.

< p > < < strong > > a target= "_blank" href= "http://www.91se91.com/" > dress > /a > matters needing attention when using metal zipper. Wool knitted fabric < /strong > /p >

< p > bleaching of wool knitwear is usually done in the following ways.

1. treat with acid bleach (H2O2) or reductive bleach (sulphite).

2. in the post processing of bleaching process, such as shrink proof treatment or bleaching treatment, if water washing and neutralization treatment are not enough, gases such as CL2 or S2 will be generated and will react with metals at high temperature (steam ironing).

So after bleaching, please use clean enough cloth.

3. as the fabric is pressed and pressed immediately after being pressed by steam, the metal zipper containing copper alloy components (teeth, pull heads and upper and lower stops) react with reagents or gases and are easy to discolor.

So, after the steam is ironed, please fully cool and repack it.

Leather products are usually treated with inorganic acids, sulfuric acid, chromium compounds, aldehydes and other compounds.

The main component of leather is animal protein. It is very difficult to completely remove the processing reagents (inorganic acids, sulfuric acid, chromium compounds, aldehyde compounds, etc.), which easily lead to the phenomenon of reagents remaining on leather.

These reagents react with metal zippers, and the color of metal parts (teeth, pull heads and upper and lower stops) will change slowly.

Therefore, please use fully cleaned and neutralized leather.

Because of the inadequate cleaning treatment after dyeing, the acid compounds remaining on dyed fabrics are easy to react with metal zippers and stain fabrics.

Therefore, please use completely removes the oxidant (neutralization treatment) or thorough cleaning of the material.

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< p > < strong > when buying metal zippers, special purposes and special requirements should be noted, such as ordinary water washing, acid enzyme washing, etc.

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