In the printing process of handbag pattern, quality problems often occur due to inadequate plate making, ranging from waste of materials and man hours to scrapping of products, resulting in serious economic losses. To eliminate the above problems, we should pay attention to the following aspects.

一、不同种类的纸袋需要拼在一张印版上进行印刷时，如果拼版时色调相同或相近的产品没有拼在同一纵向位置上，可能会出现A款产品能达到打样稿标准，B款产品基本接近打样稿标准，C款产品与打样稿有轻微色差，D款产品与打样稿色差较大的现象。因此，在拼版时应将暖色调、冷色调、中间色调的产品拼在同一纵向位置上，以便于印刷出优良的产品。

1、 When different kinds of paper bags need to be assembled on a printing plate for printing, if the products with the same or similar colors are not assembled in the same longitudinal position during assembly, there may be a phenomenon that product a can meet the proofing standard, product B is basically close to the proofing standard, product C has a slight color difference with the proofing, and product D has a large color difference with the proofing. Therefore, the warm tone, cold tone and intermediate tone products should be put together in the same vertical position during the composition, so as to print excellent products.

二、纸袋图案拼版时如果将纸盒的非图文部分放于叼口处，而拖梢处放的不是连续调图像，是平网或实地的话，那么纸袋图案印刷时就很容易产生“鬼影”，严重影响产品质量。此时应将非图文部分放于拖梢处，这样就不会出现“鬼影”。

2、 When making up the paper bag pattern, if the non graphic part of the carton is placed at its mouth, and the trailing tip is not a continuously adjustable image, but a flat screen or field, it is easy to produce "ghost" during the printing of the paper bag pattern, which seriously affects the product quality. At this time, the non graphic part should be placed at the trailing tip, so that there will be no "ghost".

三、纸袋图案拼版时还应注意不能为了节省胶片而将纸盒成品线省去，而是依靠晒版和印刷人员计算叼口和成品的位置，这样会大大影响生产效率，还可能会因为晒版和印刷人员一时疏忽，造成重大事故。

3、 When making up paper bag patterns, it should also be noted that the carton finished product line should not be omitted in order to save film, but rely on the printing and printing personnel to calculate the position of its mouth and finished products, which will greatly affect the production efficiency and may cause major accidents due to the negligence of the printing and printing personnel.

四、纸袋图案输出的胶片上通常不含拉规标识线，但如果遇到叼口与拖梢均为空白的情况，会给纸盒的印刷定位带来大不便。对此，有必要在胶片上制作出拉规标识线。凡是不需要裱瓦楞纸板的包装纸盒，拉规标识线制作于靠身部位；需要裱瓦楞纸板的包装纸盒，拉规标识线制作于朝外部位。

4、 The film of paper bag pattern output usually does not contain pull gauge identification line, but if the mouth and trailing tip are blank, it will bring great inconvenience to the printing and positioning of carton. For this reason, it is necessary to make drawing gauge identification lines on the film. For packaging cartons that do not need to be mounted with corrugated board, the pull gauge identification line shall be made at the body part; For the packaging carton that needs to be mounted with corrugated board, the pull gauge identification line is made at the outward part.

五、纸袋图案确保胶片符合印刷要求，胶片输出后认真核对胶片上的图文是否与打样稿一致（作为核对基准的纸盒刀版线须规范）。

5、 The paper bag pattern ensures that the film meets the printing requirements. After the film is output, carefully check whether the pictures and texts on the film are consistent with the proofing draft (the carton knife plate line as the check benchmark must be standardized).

六、纸袋图案保证不同胶片之间的正确套准，这是因为一套胶片一般分两次输出，其套印精度很容易受到一些客观因素的影响。输出的胶片一旦出现质量问题，应重新制作。

6、 The paper bag pattern ensures the correct registration between different films, because a set of films is generally output twice, and its overprint accuracy is easily affected by some objective factors. Once the output film has quality problems, it shall be made again.

七、纸袋晒版前应认真比较胶片与打样稿，如果主色调的胶片密度偏大，就应加晒版时的曝光时间，避免印刷色调偏重；如果密度偏小，则应减少晒版时的曝光时间，以免网点丢失影响色彩再现。

7、 Before printing, the paper bag shall carefully compare the film with the proofing draft. If the film density of the main color is too large, the exposure time during printing shall be added to avoid printing color bias; If the density is too small, reduce the exposure time during printing to avoid dot loss affecting color reproduction.