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Knowledge of luggage accessories

Observation of trademark quality

Silk screen printing: The effect of silk screen printing is closely related to the printed material. The effect of silk screen printing mainly depends on the following aspects: the printed silk screen should not have glue falling off, which can be seen by sticking with adhesive tape; the surface is glossy, without fine pores, and not very rough, and the printing has a certain thickness, the material base color cannot be seen, and it is not easy to stick to dust; the edge of the silk screen is smooth, there is no dog tooth print feeling; it will not fade; of course, it is more important to pay attention to not cracking when printing on elastic materials. You can clearly see it by pulling the material apart. The color registration should be accurate and not shift.

Electric embroidery: The effect of electric embroidery is closely related to the vertical and horizontal grain fabric of the material. The effect of electric embroidery mainly depends on the following aspects: the density should be sufficient, and the base material cannot be seen; the thickness should be uniform, not large or small; the edge of the electric embroidery should be uniform and smooth, and the edge should not be uneven; the connection line should be trimmed cleanly

Glue seal: A good glue seal will not break, will not fade, has no stickiness, has smooth edges, and has clear surface content. It will not deform or soften even in areas with high temperatures.
Voltage: The materials generally used for voltage are PVC and smooth soft leather. The pressure should be full, not leaking, elastic, smooth around and will not burst. The lines are clear.
Webbing:

1. Webbing:

1) By material: nylon/terylene/PP/acrylic/cotton

Difference between nylon and PP webbing: Generally, nylon webbing is woven first and then dyed, so the color of the yarn after cutting will be white due to uneven dyeing. However, PP webbing is dyed first and then woven, so there will be no phenomenon of yarn turning white. In contrast, nylon webbing is glossy and softer than PP webbing; it can also be distinguished by the chemical reaction of combustion; generally, the price of nylon webbing is higher than that of PP webbing

Terylene webbing is softer and dull

Acrylic webbing is made of two materials, terylene and cotton

The price of cotton webbing is generally higher

2) By weaving method: plain weave/small ripple/twill/safety webbing/pit pattern/bead pattern/jacquard, etc. PP webbing can be divided into according to the thickness of its yarn 900D/1200D/1600D; At the same time, we should pay attention to the thickness of the webbing, which also determines its unit price and toughness
3) According to specifications: 10MM/12MM/15MM/20MM/25MM/30MM/32MM/38MM/50MM, etc.
2. Edge tape:
1) According to material: nylon/Tetoron/PP/Lycra, etc.
Nylon edge tape is more commonly used, and is mainly used for inner edge tape. Thickened nylon edge tape is used for outer edge tape, which is not easy to wrinkle
Tetoron edge tape is relatively Soft, and more expensive than nylon, mostly used for hemming of relatively soft fabrics

PP plain weave tape is mostly used for hemming of large bags, such as corrugated board bags, etc.

Lycra hemming tape is expensive, soft and shiny, and is mostly used on high-quality bags, such as GOLF club covers, etc.

2) According to the texture: ordinary plain weave/herringbone pattern, etc.

Herringbone hemming tape is mostly made of nylon and PP. Nylon herringbone tape is more expensive and has greater shrinkage. When calculating the material, you need to pay attention to its width; PP herringbone tape is more common in the market now, and it is more beautiful when used for external hemming, but the texture is divided into encrypted or not .
Note: When cutting the main material into strips for hemming, be sure to pay attention to the texture and cutting method (straight cutting/bias cutting/horizontal cutting) to avoid wrinkles

Zipper puller type:

1) Zipper:

(1) By material: nylon/plastic steel/metal/fresh-keeping zipper, etc.

(2) By size: 10#/8#/7# (large 5#)/5#/3#, etc.

(3) By function: 100 yards/strips/waterproof/reverse wear, etc.

Strip puller The chain is divided into left-insertion type and right-insertion type, and there are distinctions between open and closed ends/lengths.

Waterproof zippers are reverse-threaded, and are divided into matte glue and bright glue due to different glue applications.

2) Pullers:

(1) By material: plastic steel/metal/fresh-keeping pullers, etc.

(2) By pull tab: ordinary (no pull tab/short pull tab/long pull tab)/customer-specific pull tab

(3) Pullers are commonly metal pullers. Due to different electroplating methods, they can be divided into electro-white/sand electro-plated/electro-plated black/baked matte black/black nickel/antique bronze/matte copper/electro-white hanging/real gold hanging, etc. Please refer to the manufacturer's catalog. Pay attention to the color difference of each batch of goods in the electroplating method

Note: Zipper pullers must be used in pairs. Sometimes zipper pullers from different manufacturers may not match each other

Elastic band:

1) Commonly used elastic bands are strong elastic bands, which can be used for pen holders/edge wrapping, etc. Folded elastic bands are more beautiful for edge wrapping, and are mainly used by Japanese customers

2) Elastic bands also include medical elastic bands/knitted elastic bands, etc.

Threads:

1) Classification of threads, threads are generally divided into 0#/10#/30#/40#, with a wide variety of types, including nylon thread/polyester thread/Bondy thread/cotton yarn thread/mark thread/transparent fishing line, etc.

2) Special threads include waxed threads/waterproof threads, etc. At the same time, general nylon threads will be oiled. When sewing

Some fabrics (fabrics with EMB) need to use non-oiled threads to avoid oil seepage, causing Dirt on fabrics; use 40# thread for thinner fabrics, which are not easy to wrinkle

Hook and loop fasteners:

Hook and loop fasteners are divided into A and B sides (i.e. hook side and fleece side), and the specifications produced by manufacturers are 16MM/20MM/25MM/38MM/50MM/100MM. According to different functions, hook and loop fasteners can be specially processed, such as sulfur-resistant/phenol yellow-resistant/fireproof/CT glue

/linting-free/soft hook/high-frequency hook and loop fastener/self-adhesive hook and loop fastener, etc.