包装盒专业英语
合集下载
相关主题
- 1、下载文档前请自行甄别文档内容的完整性，平台不提供额外的编辑、内容补充、找答案等附加服务。
- 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
- 3、如文档侵犯您的权益，请联系客服反馈,我们会尽快为您处理(人工客服工作时间：9:00-18:30)。
Cylinder Machines A cylinder machine (Figure 3.3) rotates a screen drum in a vat of furnish. (The paper is sometimes called vat paper.) As the water pours through the screen, fiber accumulates on the outside of the screen. This thin layer of matted fiber is transferred onto a moving felt belt that passes sequentially over further rotating cylinders, each of which deposits another fiber layer.
Representative Papermaking Machines
Fourdrinier Machines Fourdrinier machines (Figure 3.1) pump furnish from a headbox directly onto a moving wire screen through which the water is continuously drained. Fourdrinier machines may have a second headbox (Figure 3.2)situated downstream of the first headbox to add further quantities of furnish onto the partially dewatered initial lay-down.
Introduction
Paper and paperboard ·Paperboard, boxboard, cardboard, and cartonboard are
all terms used to describe heavier paper stock. ·The International Organization for Standardization (ISO)
Representative Papermaking Machines
Figure 3.1 Furnish pours out of the headbox of a fourdrinier machine and onto an endless wire or screen where excess water can be drained. The fibers
包装盒专业英语
UNIT TWO
PACKAGING MATERIALS AND CONTAINER
第二单元 包装材料和容器
Lesson 3
Paper and Paperboard
第3课 纸与纸板
Introduction
Definition of paper: ·Paper is defined as a matted or felted sheet usually composed of plant fiber. Paper has been commercially made from such fiber sources as rags (linen), bagasse (sugar cane), cotton, and straw. Modern paper is made almost exclusively from cellulose fiber derived from wood. ·Although the word “paper” is derived from the Egyptian term, “papyrus” was not a true paper in the modern sense. - Invention of paper ·The invention of paper by blending cellulose fibers didn’t occur until the beginning of the second century A.D.
remain trapped on the screen
Representative Papermaking Machines
Figure 3.2 Paper is dewatered at the wet end of a fourdrinier machine
百度文库epresentative Papermaking Machines
states that material weighing more than 250 grams per square metre (511b per 1,000 sq. ft.) shall be known as paperboard. U.S. practice calls material that is more than 300(0.012 in.) thick paperboard.
Introduction
Ts’ai Lun, a member of the court of the later Han Dynasty, is generally credited with developing the first real papermaking process in 105 A.D. ·The “Fourdrinier machine” was the first on the market and produced a homogenous (single-ply) sheet of boxboard in various thicknesses. It was soon joined by the “Cylinder machine” which formed a multi-layered (multi-ply) type of paperboard. These machines were first installed in the United States around 1830.
Representative Papermaking Machines
Fourdrinier Machines Fourdrinier machines (Figure 3.1) pump furnish from a headbox directly onto a moving wire screen through which the water is continuously drained. Fourdrinier machines may have a second headbox (Figure 3.2)situated downstream of the first headbox to add further quantities of furnish onto the partially dewatered initial lay-down.
Introduction
Paper and paperboard ·Paperboard, boxboard, cardboard, and cartonboard are
all terms used to describe heavier paper stock. ·The International Organization for Standardization (ISO)
Representative Papermaking Machines
Figure 3.1 Furnish pours out of the headbox of a fourdrinier machine and onto an endless wire or screen where excess water can be drained. The fibers
包装盒专业英语
UNIT TWO
PACKAGING MATERIALS AND CONTAINER
第二单元 包装材料和容器
Lesson 3
Paper and Paperboard
第3课 纸与纸板
Introduction
Definition of paper: ·Paper is defined as a matted or felted sheet usually composed of plant fiber. Paper has been commercially made from such fiber sources as rags (linen), bagasse (sugar cane), cotton, and straw. Modern paper is made almost exclusively from cellulose fiber derived from wood. ·Although the word “paper” is derived from the Egyptian term, “papyrus” was not a true paper in the modern sense. - Invention of paper ·The invention of paper by blending cellulose fibers didn’t occur until the beginning of the second century A.D.
remain trapped on the screen
Representative Papermaking Machines
Figure 3.2 Paper is dewatered at the wet end of a fourdrinier machine
百度文库epresentative Papermaking Machines
states that material weighing more than 250 grams per square metre (511b per 1,000 sq. ft.) shall be known as paperboard. U.S. practice calls material that is more than 300(0.012 in.) thick paperboard.
Introduction
Ts’ai Lun, a member of the court of the later Han Dynasty, is generally credited with developing the first real papermaking process in 105 A.D. ·The “Fourdrinier machine” was the first on the market and produced a homogenous (single-ply) sheet of boxboard in various thicknesses. It was soon joined by the “Cylinder machine” which formed a multi-layered (multi-ply) type of paperboard. These machines were first installed in the United States around 1830.