Choosing the right print coating for your printing and packaging products

Coating-unitThe right print coating can help protect the printed piece from mositure, scratching, scuffing and finger prints. Also it can add the creative dimension to the carton box to achieve certain visual effect. The print coating usually goes with the coated paper, because the hard, nonporous surface of coated paper holds the coating well on the top of the paper rather than have it disappear by being absorbed into the paper. Even when trying to achieve an overall matte effect, a gloss coated sheet is usually the best paper choice and the gloss finish on the paper will provide superior printability. In general, uncoated papers do not benefit very much in appearance from coatings or varnishes, although either will help prevent rubbing in areas of heavy ink coverage. Matte or satin varnishes or coatings are the best choices for uncoated stocks.

Varnishes

Varnishes are applied on press like any other ink and can be tinted to create a special effect. Although gloss and matte varnishes are typically used as spot or overall coatings, they can also be incorporated in the process or spot color inks in order to provide a unique look to the presswork. They can be wet trapped (i.e. printed at the same time as the other inks) or dry trapped (i.e. printed as a second pass through the press after the other inks have dried). Dry trapping provides a superior result but is a more expensive process. Varnishes may yellow with age, however, this is usually not noticeable when the varnish is used over process colors, but it is noticeable when the varnish is applied over unprinted paper. They also require the use of offset spray powder on press to keep the printed sheets from sticking together before the varnish is completely cured. The powder left behind can adversely affect the look and feel of the finished piece.

Gloss varnish:

This coating can be applied overall or in spot areas with high precision. A gloss varnish increases the saturation and depth of colors while improving image contrast. It provides good protection against rub-off but some fingerprinting will be apparent on dark or light colors. Because the gloss finish is highly reflective it creates glare on the surface of the print which may impair the readability of text.

Matte varnish:

This ink protects the sheet with a non-reflective coating which enhances the readability of text-heavy pages. Using a matte varnish over images tends to flatten and soften them, but it can provide a lush tactile quality to the paper surface. As with a gloss varnish the coating is printed with a litho plate, so it can also be spot applied with high precision. It is more resistant to fingerprinting than a gloss varnish however it will tend to scuff or gloss up with wear. If the presswork is packed for delivery it’s a good idea to place blank paper between the printed items to prevent them rubbing against each other and scuffing.

Satin varnish:

This coating is created by mixing gloss and matte varnishes together and offers an intermediate level of shine, with good scuff resistance.

Opaque varnish:

Adding a small amount of opaque white to a varnish can give it a slight opacity which can help in creating a stronger separation between a gloss and a matte varnish. Adding a slight contamination with silver ink can accomplish the same effect on very dark colors.

Strike-through matte varnish:

A litho plate printed varnish that, when overprinted with an overall gloss UV or aqueous coating, will create a visual separation between areas of a press sheet. Gloss/matte effects work best on dark colors, or when enhance by the content of underlying graphics.

Aqueous coating

These water-based coatings are applied using a rubber blanket inline on a special dedicated press unit. among the most commonly used coatings available today and provide good protection from fingerprints and other blemishes. Aqueous coatings are less likely to yellow and are more environmentally friendly than varnishes. They dry faster than varnishes which translates into faster turnaround times on press. They don’t require spray powder. Because they seal the ink from the air, they can help prevent metallic inks from tarnishing. Aqueous coatings can cause certain spot colors such as reflex blue, rhodamine, violet, purple, and PMS warm red to change color. Sometimes within a few minutes but also over time – months or even years later. Because the aqueous coating is water-based an typically applied over the entire sheet it is best to use at least an 80# text weight or heavier paper to prevent the paper from curling, distorted, or wrinkled.

Gloss aqueous:

Usually applied as an overall coating, gloss aqueous offers better protection than gloss varnish. It is sometimes applied to a spot area however this requires cutting an expensive press blanket. It also results in edges that are not as sharp as a spot varnish and registration that is less precise. The surface dries instantly, making it an excellent choice for short run work-and-turn projects. Aqueous coatings help disguise surface flaws and roughness in the non-print areas of inexpensive papers. The gloss finish improves the apparent saturation of ink but somewhat reduces the readability of text.

Matte aqueous:

A scuff resistant matte coating which, as with gloss aqueous, is generally applied overall. And like a matte varnish it will soften and flatten images slightly.

Satin aqueous:

A popular compromise between gloss and matte, offers a pleasing sheen and good sheet protection.

SoftTouch aqueous:

A proprietary coating that is applied with a special metering roller to create a suede-like texture and extreme matte appearance.

Pencil receptive aqueous:

This is a special matte aqueous coating that is designed to be pencil, ink and laser receptive.

Dry erase aqueous coating:

An inexpensive high gloss alternative to lamination to make any paper suitable as dry erase marker surface.

Primer aqueous:

A coating that is applied before lamination, or to difficult substrates to make them ink receptive.

UV Coatings

UV coatings are applied inline by printers or offline by finishers or converters. They are applied as a liquid, using a roller, screen or blanket, and then exposed to ultraviolet light to polymerize and harden the coating. Like aqueous coatings, UV coatings can cause certain spot colors to shift in hue. Some UV coatings may have a strong odor.

Gloss UV:

Creates the highest printable overall gloss coating. Depending on the printer’s equipment it can be applied to spot areas.

Matte UV:

Depending on the printer’s equipment it can be applied overall or just to spot areas. It is prone to fingerprinting.

Pearlescent UV:

These gloss coatings include miniscule metal flecks in red, blue or silver, giving a pearlescent appearance.

Orange peel UV:

A slightly raised, textured finish, gives this coating a unique tactile and visual quality that is similar in appearance to thermography.

When to use a print coating

In most instances a coating will help protect and enhance your final printed product. They are a must for any piece being mailed, or recommended for any product printed on coated paper that will get handled, such as business cards, brochures, bookmarks, rack cards, catalogs or presentation folders. Your printer can help you decide what type of coating is right for your project.

When not to use a print coating.

There are certain times when you do want your paper to go naked. It may be difficult to write on coated paper, especially if it has a glossy coating. If you are ordering greeting or note cards and intend to write inscriptions on the inside make sure to specify no coating on the inside of the card. The same goes for the address side of postcards or other mailing panels unless your printer or mailing house assures you they can print addresses on coated paper (as PFL does). If in doubt ask for some samples and run them through your printer or try writing on them.

Shanghai DE Printed Box is a China medium-sized custom paper box manufacturer and packaging solution provider with facilities around 100,000 square meters in total. The company exclusively specializes in the supply and export of the custom paper boxes, including the paper printed boxcorrugated printed boxcosmetic paper boxrigid paper box, cardboard gift box and custom paper bag. If you have any questions about the custom paper box, or would like us to give you a price quote, please do not hesitate to contact us by giving us an email.

The difference of the A series paper in China

The dimensions of the A series paper sizes are defined by the ISO 216 standard. And it is widely adopted by the countries in Europe and North America. However, things are quite different in China. For example, the international standard A4 paper size is 210*297mm, while it is 210*285mm in China.

Due to the low costs of printing and packaging in China, many European and North American Countries import printing and packaging products from China. Therefore, for the graphic designers, a good understanding of the paper size used in China can efficiently reduce the paper cutting waste and cost. Below are the details.

A paper size

所谓A4的纸张就是A系列幅面的纸张的十六分之一大小
我们常用的纸张有A、B系列的幅面
拿A系列的纸张来说:A0是全开的,A1是对开的,A2是四开的,依次类推……A系列开度是国际标准开度,如:A0是全张纸,它正16开的结果是A4(210mm*297mm),相对应:
有我国的国内常用纸开度,如:787mm*1092mm是全张纸,它的16开是185mm*260mm
889mm*1194mm是大全张纸,它的(大)16开是210mm*285mm

A为1000*1400
B为1200*1600

纸张尺寸一览表
开本按照尺寸的大小,通常分三种类型:大型开本、中型开本和小型开本。以787×1092的纸来说,12开以上为大型开本,16~36开为中型开本,40开以下为小型开本,但以文字为主的书籍一般为中型开本。开本形状除6开、12开、20开、24开、40开近似正方形外,其余均为比例不等的长方形,分别适用于性质和用途不同的各类书籍。
正度纸张:787×1092mm
开数(正) 尺寸 单位(mm)
2开  540×780
3开  360×780
4开  390×543
6开  360×390
8开  270×390
16开  195×270
32开  195×135
64开  135×95
注:成品尺寸=纸张尺寸-修边尺寸

大度纸张:889*1194mm
开数(大) 尺寸 单位(mm)
2开 590×880
3开 395×880
4开 440×590
6开 395×440
8开 295×440
16开 220×295
32开 220×145
64开 110×145
注:成品尺寸=纸张尺寸-修边尺寸

补充:
A4  210mm×297mm

B5 182mm×257mm

16K 193mm×270mm

A3  297mm×420mm

B4  257mm×364mm

8K  270mm×386mm

印刷品成品尺寸
大度
2开 870×570
3开 390×870 420×580
4开 420×580 290×870
8开 420×285 210×570
16开 210×285
32开 210×140 105×285
48开折页 95×210
48开 92×210
正度
2开 760×520
3开 350×760 360×680
4开 370×520 260×760
8开 185×520 370×260
16开 185×260
32开 185×130 92×260

48开折页 86×185
48开 83×185

Shanghai DE Printed Box is a China medium-sized custom paper box manufacturer and packaging solution provider with facilities around 100,000 square meters in total. The company exclusively specializes in the supply and export of the custom paper boxes, including the paper printed boxcorrugated printed boxcosmetic paper boxrigid paper box, cardboard gift box and custom paper bag. If you have any questions about the custom paper box, or would like us to give you a price quote, please do not hesitate to contact us by giving us an email.

How to Make the Dieline of the Auto Bottom Box and the Snap Lock Bottom Box

Tuck top auto bottom box and tuck top snap bottom box are the most common box structure used in the paper printed packaging. However, it might seem quite complicated to create the dieline for such boxes. Below we illustrate how to create the auto bottom box and snap bottom box.

1. Auto bottom box 

Auto bottom allows for the boxes to be shipped flat and to be quickly assembled on the production line.  As for the price, the auto bottom box is a little more expensive than snap lock bottom box.

Auto bottom are widely used in the custom food packaging, custom retail packaging, custom biotech packaging, custom coffee packaging, custom tea packaging, and custom sporting goods packaging.

auto bottom box dieline

auto bottom

2. Snap lock bottom box

Snap lock bottom are also refered to as 1-2-3 bottom which has four flaps that are folded and locked to form the bottom in 3 steps.It has a stronger bottom compared the auto bottom. It costs less , but takes longer to be assembled.

The bottom structure is simple, aesthetic and costs less with strength and rigidity. Common uses are custom food packaging, custom retail packaging, custom biotech packaging, custom coffee packaging, custom tea packaging, and custom sporting goods packaging.

snap lock bottom dieline

snap bottom‘

Shanghai DE Printed Box is a China medium-sized custom paper box manufacturer and packaging solution provider with facilities around 100,000 square meters in total. The company exclusively specializes in the supply and export of the custom paper boxes, including the paper printed boxcorrugated printed boxcosmetic paper boxrigid paper box, cardboard gift box and custom paper bag. If you have any questions about the custom paper box, or would like us to give you a price quote, please do not hesitate to contact us by giving us an email.