Interpretation of Fabric Printing and Printing Problems (3)

(31) heterochromatic pollution

Appearance: The surface of the fabric exhibits a large area of ​​other color contamination without a certain shape.

Causes: 1) When the fabric is in a wet state, it is contaminated by contact with dyed fabrics of different colors. If the color difference is more obvious. 2) The appliance has not been thoroughly cleaned during processing or handling.

(32) Foam pollution

Appearance: The surface of the fabric is covered with foam residue, and after drying, it becomes a trace of a large piece or a thick stripe-like color.

Causes: 1). The dyeing fluid has more foam and adheres to the surface of the fabric. Due to improper use of dispersants and additives. 2). There are many bubbles in the reducing solution, especially when it is reduced after dyeing with anthraquinone dye.

(33) Agglutination contamination

Appearance: Dyeing between dyes and dyestuffs and dyestuffs causes dyes to dissolve poorly. Stained or short-striped darker stains occur on the cloth after dyeing.

Causes: 1) The dye is not dissolved or dispersed well, or the dye is mixed with other chemicals, and the hardness of the dyeing water is too high. 2) The combination of dyes and auxiliaries is not suitable, or the timing and sequence of adding the auxiliaries are not appropriate.

(34) Drum contamination

Appearance: During the dyeing and finishing process, when passing through the cylindrical device, the peripheral surface of the cylinder is dirty, for example, oil, chemicals, dyes, and other contaminants are contaminated on the cloth surface. The shape is mostly small and there is a certain distance between the two pollutions.

Causes: 1) The guide roller has oil stains. 2). The press roll is covered with a tar-like lake, or a filth such as a short fiber dropped from the fabric. 3). The drying cylinder has grease and dirt.

(35) Drug contamination

Appearance: The surface of the fabric is discolored, stained, or deteriorated.

Causes: Formation of chemicals that should not be used to infiltrate fabrics.

(36) Dyeing marks

Appearance: Along the weft or transverse direction of the fabric, there is a trace of 2 to 10 cm wide, darker or lighter than the normal color, and it has watermarks on both sides.

Cause: When the machine suddenly stops operating due to power outages, reeling, or other mechanical failure during normal operation, the fabric is held between the two rollers and occurs when the dyeing liquid or the pressure-reducing fluid is pressurized.

(37) Spots

Appearance: The finished finished fabric has a dark spot of the same color after opening. Causes: After dyeing and finishing the fabrics, in a sealed package, due to the condensation of vaporized water vapor, the dyes and processing agents with weaker wet fastness will cause them to move and form blotches.

(38) Fuzzy patterns

Appearance: The printed pattern lines are not clear enough, giving the pattern a fuzzy feel.

Causes: This type of fabrics occurs in roller printing. Improper printing drums and low pressure on the squeegee can cause such defects.

(39) Release

Appearance: The pattern printed by two or more colors fails to follow the pattern of the original design, resulting in the phenomenon of deviation or full-bottom printing.

Cause: When printing two or more patterns, the relationship between the plate and the plate cannot be accurately aligned.

(40) lack of pulp

Appearance: The design of the original design, some or all of which are not printed.

Causes: 1). The printing paste in the roller printing machine runs out of pulp and is not added in time, or the automatic supply of pulp equipment fails. 2). Pump failure in the Rotary printing machine.

(41) Broken print

Appearance: The pattern of fine lines is printed, and the pattern is occasionally interrupted.

Causes: 1). Because the pattern is too thin, the depth of the roller printing plate is not enough. The Prince of Prince of India version of the hole Prince, printing paste is not easy to penetrate. 2). The printing paste has a high viscosity.

(42) Print crease

Appearance: On the cloth surface of the printed fabric, a pattern is not printed along the longitude or longitude of the warp or longitudinal area.

Cause: Wrinkle overlaps on the fabric surface when printing, and the covered area is not printed.

(43) Plug version

Appearance: On the surface of the printed fabric, patterns with a small dot area cannot be printed, or printed dots are formed.

Causes: Occurred in the Gangban or Luodali printing. The sticky mass in the printing paste is attached to the printing plate to block the printing paste from passing through.

(44) Cross color

Appearance: The printed pattern is not sharp enough, and there is a phenomenon of crossing out of the pattern.

Causes: 1) The viscosity of the printing paste is not sufficient. 2). Two-color printing paste overlaps.

(45) Printing slurry contamination

Appearance: White printed fabrics are very uniformly contaminated by a very small amount of printing paste, which occurs mostly on the rollerd fabric.

Causes: 1). The mirror surface of the printing roller is not enough and it is easy to adhere the printing paste. 2) The squeegee is in poor contact with the printing roller, or the squeegee is not frequently sharpened, not sharp enough. Printed black or darker patterns on white are most likely to occur.


For more content, please follow this site

Kn95 Face Masks

These KN95 masks have the following features:

Complies with KN95 standards for CDC NPPTL Respirator Assessments to Support the COVID-19 Response
3-layers of Protection: Uses a triple layer of melt-blown nonwoven material to block 95% of incoming particulates.
Secure Seal: The adjustable nose piece provides a secure seal. Easy Breathing: Advanced non-woven fabric is easy to breathe through.

Comfortable Design: Made with durable elastic straps and a skin-friendly, soft non-woven fabric optimized for long periods of wear


Note

If the mask is damaged or soiled, or if breathing becomes difficult, remove the mask, discard it properly.
Keep the storage area dry at room temperature.
This mask may not eliminate the risk of all diseases and infections.
This mask must be sealed properly, misuse can result in higher risk

Kn95 Face Masks,Kn95 Protective Face Masks,4 Ply Filtration Face Mask,Adult Kn95 Face Mask

Suzhou Ruihan Automation Technology Co. LTD , https://www.ruihansz.com